Constant temperature system of portable relative gravimeter

Abstract

The invention relates to a constant-temperature system of a portable relative gravimeter. The constant-temperature system is characterized in that a first-path constant-temperature structure comprises a gravity sensor shell, a first-path heating film belt, a first-path aerogel heat insulation layer and two first thermistors, wherein the first-path heating film belt is tightly adhered to the outside of the shell, and the first-path aerogel heat insulation layer tightly wraps the periphery of the first-path heating film belt; the third constant temperature structure comprises a third heating film belt tightly attached to the periphery of the circuit board mounting shell, a third aerogel heat insulation layer tightly wrapping the periphery of the third heating film belt and a third thermistor; the second constant-temperature structure comprises an aluminum shielding cylindrical thin barrel tightly attached to the first aerogel heat insulation layer and the second aerogel heat insulation layer, a second heating film belt tightly attached to the periphery of the aluminum shielding cylindrical thin barrel, a second aerogel heat insulation layer tightly wrapping the periphery of the second heating film belt and a second thermistor; the upper end, the lower end and the periphery of the outer side of the gravity sensor shell are connected with the gravimeter outer frame through light shock absorbers. The system has the advantages of low power consumption and good constant temperature effect.

Description

technical field [0001] The invention belongs to the technical field of constant temperature structures, relates to the constant temperature technology of a gravimeter, and particularly relates to a constant temperature system of a portable relative gravimeter. Background technique [0002] The portable relative gravimeter is a precision instrument for high-precision gravity measurement. It is composed of metal zero-length springs or quartz zero-length springs, high-precision sensors and force generators. Generally, the accuracy of gravity measurement is better than . However, due to the unavoidable temperature property of the zero-length spring gravity sensor, its temperature effect seriously affects the accuracy of gravity measurement. The self-developed zero-length spring gravity sensor requires the temperature stability of its core area to be better than 0.001 °C to meet the requirements of gravity measurement accuracy better than . Therefore, it is necessary to desi...

AI Technical Summary

Problems solved by technology

However, due to the irreversible temperature property of the zero-length spring gravity sensor, its temperature effect seriously affects the accuracy of gravity measurement

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